A dog hears considerably better than a human, and the difference is greatest when it comes to the high frequencies. Where humans typically pick up sounds up to around 20,000 hertz, a dog can hear far into the ultrasonic range that we do not register at all. At the same time, the dog picks up faint sounds at a distance several times greater than ours. This means that your dog constantly lives in a soundscape you never hear yourself: whining electronics, small rodents behind the wall, and the car turning into the road long before you notice it yourself.
The dog's hearing is one of its most important sensory apparatuses alongside its sense of smell, and it is fine-tuned to a life where picking up small sounds early could determine whether there was prey or danger nearby. Below, we review how well a dog actually hears, what it can pick up that we cannot, and how its mobile ears help it work out where a sound is coming from.
Which frequencies can a dog hear that humans cannot?
The biggest difference between a dog's and a human's hearing lies in the high tones. An adult human normally hears frequencies from about 20 hertz up to around 20,000 hertz, and the upper limit also falls with age. A dog picks up far higher tones and is considered able to hear up towards 45,000 to 65,000 hertz, that is, some way into what we call ultrasound. Hertz is a measure of how many oscillations a sound wave makes per second, and the higher the number, the brighter and more shrill the tone is to an ear that can perceive it.
This explains several everyday phenomena. A dog whistle can produce a clear tone for the dog, even though to us it seems completely silent, because the tone lies above our hearing. In the same way, dogs can react to whining sounds from TV sets, chargers, or other electronic devices that we do not notice. Many rodents and small animals also communicate at high frequencies, and this fits well with the dog's natural role as a hunter, where the ability to hear prey squeak or rustle was a real advantage.
How far away can a dog hear sounds?
In addition to hearing brighter tones, the dog also picks up fainter sounds over a longer distance than we do. How well a sound carries depends on wind, terrain, and background noise, but as a rule of thumb a dog can pick up a sound at several times the distance a human can. If you are standing in the same place and a sound is right on the edge of what you can hear, the dog has often heard it clearly quite some time earlier.
This is why the dog often raises its head or walks to the door long before you hear anyone coming. It has heard the car, the keys, or the footsteps at distances where the sound has not yet reached your awareness. This same sensitivity means that loud sounds such as fireworks and thunderstorms can be experienced far more violently for the dog than for us. If your dog is uneasy about loud sounds, you can find concrete advice in the guide about what to do when your dog is afraid of fireworks.
How the mobile ears help the dog locate a sound
A dog not only hears better, it is also better at determining where a sound comes from. This is due partly to the fact that the ears are mobile and controlled by a large number of small muscles, where humans only have a few, largely useless ear muscles. The dog can therefore turn and point each ear towards a sound source almost like a small dish that catches and amplifies the sound from a particular direction.
You can often see it directly: the dog turns one ear towards a sound while the rest of the body stands still, and then adjusts the position of its head until it has located the source precisely. The shape of the ears also plays a part. Dogs with large, upright ears catch and direct the sound a little differently than dogs with long, drooping ears, but both types actively use their mobile ears to orient themselves in the soundscape.
When does a puppy begin to hear?
Puppies are born both blind and deaf. The ear canals are closed at birth and only open during the first weeks of life, typically around two to three weeks of age. In the very first period, the puppy therefore orients itself almost exclusively through smell, warmth, and touch from the mother and the litter. When hearing properly arrives, a whole new world opens up, and the puppy begins to react to voices, sounds, and noise around it.
This very period is important for the puppy to learn to handle everyday sounds calmly, and calm, gradual habituation to sounds is a central part of good socialisation. If you want to give your puppy the most secure start, you can delve into both socialisation of a puppy and the entire ultimate puppy guide, where the advice comes directly from ESSENTIAL FOODS. Precisely because the first months shape the dog for life, we have gathered meals, advice, and knowledge in our puppy universe, so you have it all in one place.
Can a dog's hearing deteriorate with age?
Just as in humans, hearing can weaken as the dog grows older. Some dogs gradually lose part of their hearing in their senior years, and this can show by them reacting later to being called, no longer waking from sounds that previously woke them, or seeming more startled if you come up behind them. A certain age-related reduction in hearing is not unusual and can be a natural part of the golden years.
Some dogs are also congenitally wholly or partially deaf, which is seen particularly in certain breeds and colour types. If you find that your dog suddenly or markedly reacts worse to sounds, it is always a good idea to have it examined by a veterinarian, who can assess whether there is something behind it. A dog with reduced hearing can easily live a rich and secure life, but it requires that you make greater use of visible signals, hand signs, and vibrations rather than your voice in everyday life.
What the dog's keen hearing means for everyday life
When you know how fine a soundscape your dog lives in, many reactions become easier to understand. The dog that growls at a seemingly empty garden has probably heard something you cannot, and the dog that seeks out your company during a thunderstorm experiences the sound far more strongly than you do. Taking the sensitive hearing into account is about both creating calm around loud sounds and using calm, clear signals in daily communication. The better you understand what your dog actually hears, the easier it becomes to give it a secure and predictable everyday life, where its keen senses are a strength and not a source of stress.